In Direct with ad click gives security error
fix it, if you install a free certificate?
What kind of security error? What is written there?
What is your website?
then the certificate is not being. And in general it is not clear what the error? Prevention can?
Yes, everything will be okay, LE normal legitimate certificate.
Here's a page which describes the compatibility of browsers and software https://letsencrypt.org/docs/certificate-compatibility/
Offhand, except some of the exotic and the boundary cases, the popular browsers and software receive a certificate.
I have worked with no errors
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